Nested For Loop [EXAMPLES!]

[ALPHA]

Hi,
Here is a collection of few examples for NESTED FOR LOOP.
Simple codes in how to use nested loops,
There is only the code, no explanation (not good at explaining anything)
So, just try to understand the program
Hope this will help as much people as possible
Let's Stop talking and just begin

OK
Here we go!

1.Get the following output :
a.
1
12
123
1234
12345
123456
1234567
12345678
123456789

//Numbers Ladder
//Nested Loops
//By ALPHA
//On 22 Oct 2008
//www.CodeCall.net
//----------------------
public class testFor
{
	public static void main(String [] args)
	{
		for (int i=1; i<=9; i++)
		{
			System.out.println();
			for (int j=1; j<=i; j++)
			{
				System.out.print(j);
			}
		}
	  System.out.println();
	}
}

b.

*
**
***
****
*****
******
*******
********
*********
(just bring it to the LEFT side just like it is)

//Nested Loops
//star ladder
//www.CodeCall.net
//By ALPHA
//22 Oct 2008
//--------------
public class starForTest
{
	public static void main(String [] args)
	{
		for (int i=1; i<=9; i++)
		{
			System.out.println();
			for (int j=9; j>=i; j--)
			{
				System.out.print(" ");
			}
		 for (int k=1; k<=i; k++)
		 {
		 	System.out.print("*");
		 }	
	            }
	System.out.println();	
	}
}

2.A program for sorting an array elements (ascending sort)

//Nested For Loop
//Sorting elements of an Array
//By ALPHA
//23 Oct 2008
//www.CodeCall.net
//------------------------
public class arrSort
{
	public static void main(String args [])
	{
		int num[]=new int[] {20,50,10,70,40,80,30,90,60};
		int t=0;

		for (int i=0; i<num.length; i++)
			{
				for (int j=i+1; j<num.length; j++)
				if (num[i]>num[j])
				{
					t=num[i];
					num[i]=num[j];
					num[j]=t;
				}
			}
			System.out.println("Sorting elements in Ascending Order :\n");
			for (int i=0; i<num.length; i++)
			System.out.println(num[i]);
	}
}

3.Program to create a Two-Dimensional Array

//Two Dimensional Array
//Nested Loops
//By ALPHA
//On 23 Oct 2008
//www.CodeCall.net
//-------------------------------
public class twoDimArray
{
	public static void main(String [] args)
	{
		String city[][]={ {"NewYork","Muscat","London"} , {"Cairo","Beijing","CapeTown"} };
		/* Note : hope u already know why 
		*  i used Double Qoutes( " ) when 
		*  initializing the Array elements
		*/	
		for (int i=0; i<city.length; i++)
		{
			for (int j=0; j<city[i].length; j++) 
//Note:we could use 2 and 3 instead of "city.length" and "city[i].length
//'Cause we already know that we have 2 Rows and 3 Columns ^_^
			{
				System.out.print(city[i][j]+"\t");	
			}
	     System.out.println();
		}
	}
}

4.Program to create multiplication table

//Multiplication Table
//Using Nested Loops
//By ALPHA
//23 October 2008
//www[dot]CodeCall[dot]net
//-----------------------------------
/*Important Note : this program includes Parts that
* are ONLY for the shape of the OUTPUT
* it will NOT be an ERROR if you
* missed those Parts but, as said it's only for
* the shape of the output
*/
//------------------------------------
public class multiplicationTable
{
	public static void main(String args[])
	{
		System.out.print("  ");
		
		for (int i=1; i<=9; i++)
		System.out.print("   "+i);
		
		System.out.println();
		System.out.println("-------------------------------------------------------");
		
		for (int i=1; i<=9; i++)
		{
			System.out.print(i+"|");	
			for (int j=1; j<=9; j++)
			{
				if (i*j<10)
					System.out.print("   "+i*j);
				else
					System.out.print("  "+i*j);
			}
		System.out.println();
		}
	}
}

That's all I have for nested loops
If anyone has any other ideas, PLEASE post it !

c u
ALPHA

[Turk4n]

Hi,
Here is a collection of few examples for NESTED FOR LOOP.
Simple codes in how to use nested loops,
There is only the code, no explanation (not good at explaining anything)
So, just try to understand the program
Hope this will help as much people as possible
Let's Stop talking and just begin

OK
Here we go!

1.Get the following output :
a.
1
12
123
1234
12345
123456
1234567
12345678
123456789

//Numbers Ladder
//Nested Loops
//By ALPHA
//On 22 Oct 2008
//www.CodeCall.net
//----------------------
public class testFor
{
	public static void main(String [] args)
	{
		for (int i=1; i<=9; i++)
		{
			System.out.println();
			for (int j=1; j<=i; j++)
			{
				System.out.print(j);
			}
		}
	  System.out.println();
	}
}

b.

*
**
***
****
*****
******
*******
********
*********

//Nested Loops
//star ladder
//www.CodeCall.net
//By ALPHA
//22 Oct 2008
//--------------
public class starForTest
{
	public static void main(String [] args)
	{
		for (int i=1; i<=9; i++)
		{
			System.out.println();
			for (int j=9; j>=i; j--)
			{
				System.out.print(" ");
			}
		 for (int k=1; k<=i; k++)
		 {
		 	System.out.print("*");
		 }	
	            }
	System.out.println();	
	}
}

2.A program for sorting an array elements (ascending sort)

//Nested For Loop
//Sorting elements of an Array
//By ALPHA
//23 Oct 2008
//www.CodeCall.net
//------------------------
public class arrSort
{
	public static void main(String args [])
	{
		int num[]=new int[] {20,50,10,70,40,80,30,90,60};
		int t=0;

		for (int i=0; i<num.length; i++)
			{
				for (int j=i+1; j<num.length; j++)
				if (num[i]>num[j])
				{
					t=num[i];
					num[i]=num[j];
					num[j]=t;
				}
			}
			System.out.println("Sorting elements in Ascending Order :\n");
			for (int i=0; i<num.length; i++)
			System.out.println(num[i]);
	}
}

3.Program to create a Two-Dimensional Array

//Two Dimensional Array
//Nested Loops
//By ALPHA
//On 23 Oct 2008
//www.CodeCall.net
//-------------------------------
public class twoDimArray
{
	public static void main(String [] args)
	{
		String city[][]={ {"NewYork","Muscat","London"} , {"Cairo","Beijing","CapeTown"} };
		/* Note : hope u already know why 
		*  i used Double Qoutes( " ) when 
		*  initializing the Array elements
		*/	
		for (int i=0; i<city.length; i++)
		{
			for (int j=0; j<city[i].length; j++)
			{
				System.out.print(city[i][j]+"\t");	
			}
	     System.out.println();
		}
	}
}

4.Program to create multiplication table

//Multiplication Table
//Using Nested Loops
//By ALPHA
//23 October 2008
//www[dot]CodeCall[dot]net
//-----------------------------------
/*Important Note : this program includes Parts that
* are ONLY for the shape of the OUTPUT
* it will NOT be an ERROR if you
* missed those Parts but, as said it's only for
* the shape of the output
*/
//------------------------------------
public class multiplicationTable
{
	public static void main(String args[])
	{
		System.out.print("  ");
		
		for (int i=1; i<=9; i++)
		System.out.print("   "+i);
		
		System.out.println();
		System.out.println("-------------------------------------------------------");
		
		for (int i=1; i<=9; i++)
		{
			System.out.print(i+"|");	
			for (int j=1; j<=9; j++)
			{
				if (i*j<10)
					System.out.print("   "+i*j);
				else
					System.out.print("  "+i*j);
			}
		System.out.println();
		}
	}
}

That's all I have for nested loops
If anyone has any other ideas, PLEASE post it !

c u
ALPHA

Great stuff,however you should post this in the java tutorials

[ALPHA]

sorry guys,
i thought it would be better to post it there
anyway, thanks for moving it to the right section

and by the way, nice sig turk4n

[Kevin_Silva]

I need the Java code on drawing the letter K and V using for loop. I really need help

[chabielita]

whoow.. nice codes.. you gave me an idea for our exam.. hihihi..

well since this area are for NESTED for LOOP examples.. just wanna share
my simple codes..

public class ForLoop1{
public static void main(String[]args){

int count=0;

	for(count=0;count<13;count++)
	{
	System.out.print("*");
	}

int count1=0;
	
	for(count1=0;count1<7;count1++)
	{
	
	System.out.println("\t\t");
	System.out.println("\t\t*");
	}
}
}

Output:

*************
*
*
*
*
*
*
*

hope this codes helps addens dis collection...

[Ranilplus]

how to
999999999
_88888888
__7777777
___666666
____55555
_____4444
______333
_______22
________1

[Sinipull]

        for(int i = 9; i > 0; i--){
            for(int j = i; j < 9; j++){
                System.out.print("_");
            }
            for(int j = i; j > 0; j--){
                System.out.print(i);
            }
            System.out.println();
        }

[asma]

how to do this??
1234
123
12
1
please help me....

[GMVResources]

Nice loops you guys! =D

[AlexIsOneCoolGuy]

Nested loops for Objective-C.

#import <Foundation/Foundation.h>


int main (int argc, const char * argv[])
{
	NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
	

	int i,j;
	
	// loop for top pyramid of the diamond
	
	for (i = 6; i > 0; i--) {		
		
		for (j = i; j > 0; j--) {	
			printf("-");
			
		}
		
		for (j = i; j < 6; j++) {	
			printf("*");
		}
		
		for (j = i; j <= 6; j++) {	
			printf("*");
		}
		
		for (j = i; j > 0; j--) {
			printf("-");
		}
		
		
		printf("\n");				
		
		
	}

// loop for bottom pyramid of the diamond
	
	for (i = 6; i >= 0; i--) {
		for (j = i; j < 6; j++) {
			printf("-");
		}
		
		for (j = i; j > 0; j--) {
			printf("*");
		}
		
		for (j = i; j >= 0; j--) {
			printf("*");
		}
		
		for (j = i; j < 6; j++) {
			printf("-");
		}
		
	
		
		printf("\n");
		
	}
	
	
	[pool drain];
	return 0;

}




/*
 Program output:
 ------*------
 -----***-----
 ----*****----
 ---*******---
 --*********--
 -***********-
 *************
 -***********-
 --*********--
 ---*******---
 ----*****----
 -----***-----
 ------*------
 
 */